linux-kernel - Re: [PATCH] mtd: blkdevs: Fix mtd block write failure

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Date:   Thu, 3 Aug 2017 17:10:04 +0200
From:   Boris Brezillon <boris.brezillon@...e-electrons.com>
To:     Abhishek Sahu <absahu@...eaurora.org>
Cc:     dwmw2@...radead.org, computersforpeace@...il.com,
        marek.vasut@...il.com, richard@....at, cyrille.pitchen@...ev4u.fr,
        linux-arm-msm@...r.kernel.org, linux-mtd@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: blkdevs: Fix mtd block write failure

On Wed,  2 Aug 2017 18:03:05 +0530
Abhishek Sahu <absahu@...eaurora.org> wrote:

> All the MTD block write requests are failing with
> following error messages
> 
>     mkfs.ext4  /dev/mtdblock0
> 
>     print_req_error: I/O error, dev mtdblock0, sector 0
>     Buffer I/O error on dev mtdblock0, logical block 0,
>     lost async page write
> 
> The control is going to default case after block write request
> because of missing return.
> 
> Fixes: commit 2a842acab109 ("block: introduce new block status code type")
> Signed-off-by: Abhishek Sahu <absahu@...eaurora.org>

Acked-by: Boris Brezillon <boris.brezillon@...e-electrons.com>

> ---
>  drivers/mtd/mtd_blkdevs.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
> index f336a9b..9ec8f03 100644
> --- a/drivers/mtd/mtd_blkdevs.c
> +++ b/drivers/mtd/mtd_blkdevs.c
> @@ -113,6 +113,7 @@ static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
>  		for (; nsect > 0; nsect--, block++, buf += tr->blksize)
>  			if (tr->writesect(dev, block, buf))
>  				return BLK_STS_IOERR;
> +		return BLK_STS_OK;
>  	default:
>  		return BLK_STS_IOERR;
>  	}